The client asked that I take pictures of their New Home subdivision from the EXACT same spot in every season. I had to mark the spot in the woods, measure the camera height, shoot at the same time of day - she wanted it "exact". I worked hard. Every season I showed the pictures to her, comparing angles. Sometimes she wasn't satisfied and made me retake. One year later, finally, I was done! I proudly presented all four shots, side by side.
Client: Nice. . . so, ah, what were you planning on using these for?